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Freezer (one which will fit THE centrifuge)
Scale
Ample Supply Of water
Centrifuge
Ice Cube Tray
Condoms
Bowl
Three-Legged Stool
To begin our experiment, the necessary materials above must first be obtained. After all the materials are acquired, start the initial tests to see if the mass of a compound remains constant through a change of state.
1. To do this, start by taking several ice cubes from the freezer and place them in a bowl
2. Place the bowl on a scale and record the initial weight (We ran into a possible source of inaccuracy here. Our scale is substandard and inadequate but the thought was that as long as the mass remains the same, we wouldn't have a problem. Had the water began to gain or lose mass, we would've had a very large dilemma on our hands)
3. After weighing the bowl of ice, wait for the cubes of ice to melt and then measure it again
4. Record the results (Our hypothesis held true and the water held its mass)
5. Next, test to see how long it takes the water to freeze in a centrifuge in the freezer. Do this by placing the centrifuge in the freezer in a stable manner (Exhibit A) (We had a bit of a problem with this because we attempted to place a stool inside the freezer to provide a platform for the centrifuge. The stool, however, had other plans and would not sit still. We fought and fought and put that stool down)
6. Now that the centrifuge is placed in the freezer, place a condom in each of the six metal tubes
7. Fill each condom with 10 cc of tap water
8. Place the six tubes into designated holes in the centrifuge (Exhibit B)
9. Now that everything is in its place, turn on the centrifuge and wait to see how long it takes to freeze the water (We did this multiple times. The first time we accidentally spilled some of the water at the 20-minute mark and had to restart. The decision then was to set an absolute minimum time at which we would pull the condom out: 45 minutes. The second note is that we realized we could just put a chopstick down the tube at intervals to see when it no longer was purely water. It made testing out the experiment a lot easier)
11. Record the length of time that it takes for the water to freeze (We did not actually freeze any water in the preliminary test. After centrifuging it for an hour and ten minutes, the water inside the condom inside the metal test tube was no colder than it had been when the experiment started)
12. Second to last, measure the density of the centrifuged water (now ice) with d=m/v, using displacement of the ice in water to find the volume and also the mass previously recorded
13. Finally, compare the density of the ice from the centrifuge to the ice frozen at normal gravity (1 'g')
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